iOS Development Data Persistence Technology 02--plist Introduction

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1. Introduction: The attribute list is an XML-formatted file with the extension. plist;

2. Features: plist files are saved in the form of Key-value

3. Support type: NSString, Nsdictionary, Nsarray, NSData, NSNumber and other basic types

4. How to create a plist property file

4.1 Creating directly with Xcode

4.2 Using code to create: You can write Data Nsarray (Nsmutablearray), nsdictionary (nsmutabledictionary) type directly into the plist file

Specific implementation code:

Step one: Drag two controls up

Step two: Declare properties, lines, Plistfilepath to save Name,age property plist file path

Step Three: Lazy loading

Fourth step: Customizing an initialization data method, in Viewdidload

Fifth step: Implementation method

Step Six: Send notifications when the program enters the background and implement the method

iOS Development Data Persistence Technology 02--plist Introduction